console.log(Math.PI);
console.log(Math.abs(-123));
console.log(Math.sin(1.0/6.0*Math.PI));
console.log(Math.cos(1.0/3.0*Math.PI));
console.log(Math.tan(0.5*Math.PI));
console.log(Math.random());
console.log(Math.round(3.5415926));
console.log(Math.fround(3.1415926535897932384626));
console.log(Math.trunc(3.14));
console.log(Math.sqrt(4));
console.log(Math.cbrt(8));
console.log(Math.hypot(3, 4));
console.log(Math.sign(-3.14));
